First of all, thank you for fast reply.
I'll provide here some more info, maybe it will point you on the right path to help me out.
I'm using .env file, and there's a setting (I guess it's correct but I'm writting it down because logs shows problem with session):
Also, after plugin installation, when I try to do
php artisan cache:clear
an error shows:
In Macroable.php line 103:
Method Illuminate\Support\Carbon::addMinutes does not exist.
I'm using PHP 7.2.33